[BugFix]fix handle 4 return values from noaux_tc_redundant op

[mattheliu]

Motivation

修复 noaux_tc_redundant 算子返回值不一致导致的测试失败。

问题根因：

• PR [Feature] Support noaux for eplb #5143 添加 noaux_tc_redundant 时，PD_BUILD_STATIC_OP 定义了 4 个输出，但 CUDA 函数只返回 3 个值
• PR [Fix] Fix noaux ep test #5161 为"修复测试"将 Python 代码从期望 4 个返回值改为 3 个，掩盖了这个 bug
• 现在 Paddle 框架版本变化导致行为不一致，CI 测试失败

Modifications

1. custom_ops/gpu_ops/noaux_tc_redundant.cu：修改函数返回值从 3 个改为 4 个，与 OP 定义一致

   // 修改前
   return {scores, topk_values, topk_indices};
   
   // 修改后
   return {scores, topk_values, topk_indices, tokens_per_expert_stats_list};

2. fastdeploy/model_executor/layers/moe/moe.py：恢复 PR [Feature] Support noaux for eplb #5143 原始设计，接收 4 个返回值

   scores, topk_values, topk_idx, _ = noaux_tc_redundant(...)

Usage or Command

# 运行测试
pytest tests/operators/test_noaux_tc_redundant.py -v

Accuracy Tests

使用现有测试 tests/operators/test_noaux_tc_redundant.py 验证：

• 测试用例覆盖 glm45-air (128 experts) 和 deepseek (256 experts) 配置
• 验证 topk_values 和 topk_ids 与 native 实现一致

Checklist

• Add at least a tag in the PR title.
• Format your code, run pre-commit before commit.
• Add unit tests. Please write the reason in this PR if no unit tests.
• Provide accuracy results.
• If the current PR is submitting to the release branch, make sure the PR has been submitted to the develop branch, then cherry-pick it to the release branch with the [Cherry-Pick] PR tag.

[paddle-bot]

Thanks for your contribution!

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
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Additional details and impacted files

@@            Coverage Diff             @@
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  Coverage           ?   67.57%           
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  Files              ?      391           
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  Hits               ?    35303           
  Misses             ?    14350           
  Partials           ?     2587           

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